Demountable rim



Aug. 21, 1923.l

Fatented Aug. 21, 1923.

nart' rates nonnn': J. DoNeGH, or new YORK, n. Y.

DEMOUNTABLE RIM.

`application fileclV August 23, 1920. Serial No. 466,555.

ing two parts extending` circuinferentially' around a wheel and heldtogether in separable relation by simple means which prevent VrelativeInoVeInen-t between the rim portions in any direction.

'A further obiect isito provide a construc-l tion in which said holdingmeans act to support a part of the load carried by the wheel. V

Referring to the drawings forrning part of this specification, w

Figura l is a 'side elevation of part of a wheel having a portion o-f arim and holding means enibodying niy invention, inounted thereon.

.Figure 2 is a cross sectional View of same taken on a niedian linethrough the hold- 111;: means.

Figure 3 is a plan View of a portion of the riin and the said holdingmeans mounted thereon.

A, indicates a wheel, B, a tire and C, a metallic felly band securedpermanently to 'the felly of the wheel A, and having a conave bearingsurface C' to support the conve); portion D2 of the rim section D. Therim section D' abuts the section D at the center E, and the holdingnie-ans coniprising a plate F, is located in the space forined betweenthe under side of the rim section D and D' andthe upper side of themetal felly band O and is shaped to conforrn and contact with thesurface of said felly band nd thus support the band sections D and Theplate F is spot welded to the rim portion D' as far as'thedividing'iline E, and eXtends beyond said line in contact with theport-ion D but not welded' thereto, and the wedge shaped portion E' isspot welded to the rim portion D and extends beyond the line E incontact With the surface of the rim portion D' but is not weldedthereto. G, indicates a screw which eX- tends through a hole G' formedin the plate F and screws into the threaded hole provided in the plateF' to hold the rim Sections togethenrl`he screw G, is provided with ahexagon shaped socket G2 to receive a socket Wrench.

lt is obvious that when the rim Sections are connected together by anumber of sets of plates disposed around the periphery of the wheel andconnected as illustrated in Figures 2 and 8, that the rim sectionscannot move relative to each other in any direction, each set of platesacting` to pre'v'ent differential inoveinent in any direction due to theoVerla-pping of the ends of the piatesF and F' and the close fitting ofthe V shaped wedge plate F' intov the bifurcated portion of the plate F.

'lt will be also obvious that the strain on the screw G is a tensionstrain only and therefore a Very small screw will serve the purpose ofholding the rim Sections together.

The usual clamps H H etc. are einployed to hold the rim in position onthe wheel. By reinoving the clainps Il, the rim and tire niay be moved`laterally to remove theni froni the wheel, when by reinoving the screwsG, the riin Sections D' can be withdrawn from section D, and the tire Bremoved. By znaking the plates F and F' in the forins illustrated, it iseasy to assernble the rim sections together and insure the screws comingeXactly in line with the threaded openings in the respective plates.

rlaving thus described my invention I claiin as new and desire to secureby Letters Patent;

A deniountable rim comprising two rim sections and means for holdingthem together coinprising two plates one of said plates being` V shanedwith the Verte: of the i! extending into a closed V shaped recessfornied in the other plate, the V shaped plate being rigidly attached toone rim section, and projecting` over the other rim section, therecessed plate being rigidly attached to the other rim section andextending over the first rim section and means passing through each ofthe plates whereby the plates are held together and centered withrelation to each other.

Signed at New York city, in the county of New York and State of New Yorkthis 17th day of August A. D. 1920.

ROBERT J. DONOGH.

Witness:

FRANK M. AsHLnY.

